Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ccb9d72492d6c8e…

MALICIOUS

PDF

80.3 KB Created: 2021-09-01 12:56:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: baf5380768168600af887ebfd97279b1 SHA-1: c7b74c3ce6b8ab6098fe908f9bd2d86d8b9b011e SHA-256: 3ccb9d72492d6c8e2476270b81685b0bc399ff6569a7de545c4a35317044f7ae
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous links pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of multiple external links indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/a1d0385833fc623959549911fd27ad91/83912324227.pdf In PDF document text
    • https://ardiinerkh.mn/uploads/userfiles/files/jabejerepatifevenuja.pdfIn PDF document text
    • http://www.kilincsweb.hu/fileok/file/31891710062.pdfIn PDF document text
    • https://landbondcorten.com/attachment/file/8d71f49a0aab9342b5841980495e9b27.pdfIn PDF document text
    • http://mgtuae.com/uploads/file/madisamovinaxuma.pdfIn PDF document text
    • http://cycling-software.com/files/file/5738651177.pdfIn PDF document text
    • http://jun-travel.com/userfiles/file/zasuvavisujapomavisomifel.pdfIn PDF document text
    • https://t2sc.me/userfiles/64278095209.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/a52a7617568f094e43e1c58d530a128d/jisutukar.pdfIn PDF document text
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/1fdb166912e33ed48bbe8690a2adede4/17311821380.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/44ac18ebc142f1d73a0b0aa50f79c4a5/25826344180.pdfIn PDF document text
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/85868d892213ddfba0576c06fc8aa9d0/dupotulafirizedimezidez.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/51bd43847d59c6c0efdc3e47b9933856/23735836683.pdfIn PDF document text
    • http://saydersan.com/firma/files/29163080293.pdfIn PDF document text
    • https://alnahamgroup.com/userfiles/file/40836762638.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160945bca116a7---pawomizeromiwobes.pdfIn PDF document text
    • http://atthaya.com/file_media/file_image/file/jenedelipagabapu.pdfIn PDF document text
    • https://skatrip.com/basefile/skatripcom/files/muvamemofo.pdfIn PDF document text
    • http://ajtoablakcentrum.com/_user/file/82441579939.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/b8ed03dd26d6ae19ecbb1a1707fe4329/gafisumajorepef.pdfIn PDF document text
    • http://tuhocxuatnhapkhau.com/uploads/ckfinder/files/jemanegigov.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b2a08c50960---59043216663.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=loose+motion+in+4+month+old+babyPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD697 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eeae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEAE 10700 bytes
SHA-256: 9deda28881dae3c91848a180e830e912976c0ec2e1a5b3c6e3e53bacb27bab61
font_02_sfnt_off0001070c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070C 17824 bytes
SHA-256: b3d73f42b6a52fb4b4ad77e1ff69040c1c6c1c0e0e255a7d42871b577fac1609

Open this report in the interactive analyzer, or submit your own file for analysis.